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bf6079797f
* Construct Logs with the correct severity * Remove deprecatedLogs and log squelching support * Use debugJournal for AutoSocket logging
356 lines
11 KiB
C++
356 lines
11 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_WEBSOCKET_AUTOSOCKET_AUTOSOCKET_H_INCLUDED
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#define RIPPLE_WEBSOCKET_AUTOSOCKET_AUTOSOCKET_H_INCLUDED
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#include <ripple/basics/Log.h>
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#include <beast/asio/IPAddressConversion.h>
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#include <beast/asio/bind_handler.h>
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#include <beast/asio/placeholders.h>
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#include <boost/asio.hpp>
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#include <boost/asio/ip/tcp.hpp>
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#include <boost/asio/ssl.hpp>
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// Socket wrapper that supports both SSL and non-SSL connections.
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// Generally, handle it as you would an SSL connection.
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// To force a non-SSL connection, just don't call async_handshake.
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// To force SSL only inbound, call setSSLOnly.
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class AutoSocket
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{
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public:
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using ssl_socket = boost::asio::ssl::stream<boost::asio::ip::tcp::socket>;
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using endpoint_type = boost::asio::ip::tcp::socket::endpoint_type;
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using socket_ptr = std::shared_ptr<ssl_socket>;
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using plain_socket = ssl_socket::next_layer_type;
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using lowest_layer_type = ssl_socket::lowest_layer_type;
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using handshake_type = ssl_socket::handshake_type;
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using error_code = boost::system::error_code;
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using callback = std::function <void (error_code)>;
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public:
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AutoSocket (
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boost::asio::io_service& s,
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boost::asio::ssl::context& c,
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bool secureOnly,
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bool plainOnly)
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: mSecure (secureOnly)
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, mBuffer ((plainOnly || secureOnly) ? 0 : 4)
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, j_ (ripple::debugJournal())
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{
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mSocket = std::make_shared<ssl_socket> (s, c);
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}
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AutoSocket (
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boost::asio::io_service& s,
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boost::asio::ssl::context& c)
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: AutoSocket (s, c, false, false)
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{
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}
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boost::asio::io_service& get_io_service () noexcept
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{
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return mSocket->get_io_service ();
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}
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bool isSecure ()
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{
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return mSecure;
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}
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ssl_socket& SSLSocket ()
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{
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return *mSocket;
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}
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plain_socket& PlainSocket ()
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{
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return mSocket->next_layer ();
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}
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void setSSLOnly ()
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{
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mSecure = true;
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}
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void setPlainOnly ()
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{
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mBuffer.clear ();
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}
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beast::IP::Endpoint
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local_endpoint()
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{
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return beast::IP::from_asio(
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lowest_layer().local_endpoint());
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}
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beast::IP::Endpoint
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remote_endpoint()
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{
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return beast::IP::from_asio(
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lowest_layer().remote_endpoint());
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}
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lowest_layer_type& lowest_layer ()
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{
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return mSocket->lowest_layer ();
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}
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void swap (AutoSocket& s) noexcept
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{
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mBuffer.swap (s.mBuffer);
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mSocket.swap (s.mSocket);
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std::swap (mSecure, s.mSecure);
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}
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boost::system::error_code cancel (boost::system::error_code& ec)
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{
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return lowest_layer ().cancel (ec);
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}
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static bool rfc2818_verify (std::string const& domain, bool preverified,
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boost::asio::ssl::verify_context& ctx, beast::Journal j)
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{
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using namespace ripple;
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if (boost::asio::ssl::rfc2818_verification (domain) (preverified, ctx))
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return true;
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JLOG (j.warning) <<
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"Outbound SSL connection to " << domain <<
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" fails certificate verification";
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return false;
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}
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boost::system::error_code verify (std::string const& strDomain)
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{
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boost::system::error_code ec;
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mSocket->set_verify_mode (boost::asio::ssl::verify_peer);
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// XXX Verify semantics of RFC 2818 are what we want.
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mSocket->set_verify_callback (
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std::bind (&rfc2818_verify, strDomain,
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std::placeholders::_1, std::placeholders::_2, j_), ec);
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return ec;
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}
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/*
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template <typename HandshakeHandler>
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BOOST_ASIO_INITFN_RESULT_TYPE(HandshakeHandler,
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void (boost::system::error_code))
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async_handshake (handshake_type role,
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BOOST_ASIO_MOVE_ARG(HandshakeHandler) handler)
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{
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return async_handshake_cb (role, handler);
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}
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*/
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void async_handshake (handshake_type type, callback cbFunc)
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{
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if ((type == ssl_socket::client) || (mSecure))
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{
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// must be ssl
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mSecure = true;
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mSocket->async_handshake (type, cbFunc);
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}
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else if (mBuffer.empty ())
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{
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// must be plain
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mSecure = false;
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mSocket->get_io_service ().post (
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beast::asio::bind_handler (cbFunc, error_code()));
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}
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else
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{
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// autodetect
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mSocket->next_layer ().async_receive (
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boost::asio::buffer (mBuffer),
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boost::asio::socket_base::message_peek,
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std::bind (
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&AutoSocket::handle_autodetect,
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this, cbFunc,
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beast::asio::placeholders::error,
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beast::asio::placeholders::bytes_transferred));
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}
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}
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template <typename ShutdownHandler>
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void async_shutdown (ShutdownHandler handler)
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{
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if (isSecure ())
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mSocket->async_shutdown (handler);
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else
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{
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error_code ec;
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try
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{
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lowest_layer ().shutdown (plain_socket::shutdown_both);
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}
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catch (boost::system::system_error& e)
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{
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ec = e.code();
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}
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mSocket->get_io_service ().post (
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beast::asio::bind_handler (handler, ec));
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}
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}
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template <typename Seq, typename Handler>
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void async_read_some (const Seq& buffers, Handler handler)
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{
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if (isSecure ())
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mSocket->async_read_some (buffers, handler);
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else
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PlainSocket ().async_read_some (buffers, handler);
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}
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template <typename Seq, typename Condition, typename Handler>
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void async_read_until(
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const Seq& buffers, Condition condition, Handler handler)
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{
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if (isSecure())
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boost::asio::async_read_until(
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*mSocket, buffers, condition, handler);
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else
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boost::asio::async_read_until(
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PlainSocket (), buffers, condition, handler);
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}
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template <typename Allocator, typename Handler>
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void async_read_until(boost::asio::basic_streambuf<Allocator>& buffers,
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std::string const& delim, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_read_until(*mSocket, buffers, delim, handler);
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else
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boost::asio::async_read_until(
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PlainSocket(), buffers, delim, handler);
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}
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template <typename Allocator, typename MatchCondition, typename Handler>
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void async_read_until (boost::asio::basic_streambuf<Allocator>& buffers,
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MatchCondition cond, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_read_until(*mSocket, buffers, cond, handler);
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else
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boost::asio::async_read_until(
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PlainSocket(), buffers, cond, handler);
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}
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template <typename Buf, typename Handler>
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void async_write (const Buf& buffers, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_write(*mSocket, buffers, handler);
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else
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boost::asio::async_write(PlainSocket (), buffers, handler);
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}
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template <typename Allocator, typename Handler>
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void async_write (boost::asio::basic_streambuf<Allocator>& buffers,
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Handler handler)
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{
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if (isSecure ())
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boost::asio::async_write(*mSocket, buffers, handler);
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else
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boost::asio::async_write(PlainSocket(), buffers, handler);
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}
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template <typename Buf, typename Condition, typename Handler>
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void async_read (const Buf& buffers, Condition cond, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_read(*mSocket, buffers, cond, handler);
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else
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boost::asio::async_read(PlainSocket(), buffers, cond, handler);
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}
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template <typename Allocator, typename Condition, typename Handler>
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void async_read (boost::asio::basic_streambuf<Allocator>& buffers,
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Condition cond, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_read (*mSocket, buffers, cond, handler);
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else
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boost::asio::async_read (PlainSocket (), buffers, cond, handler);
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}
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template <typename Buf, typename Handler>
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void async_read (const Buf& buffers, Handler handler)
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{
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if (isSecure ())
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boost::asio::async_read (*mSocket, buffers, handler);
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else
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boost::asio::async_read (PlainSocket (), buffers, handler);
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}
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template <typename Seq, typename Handler>
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void async_write_some (const Seq& buffers, Handler handler)
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{
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if (isSecure ())
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mSocket->async_write_some (buffers, handler);
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else
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PlainSocket ().async_write_some (buffers, handler);
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}
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protected:
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void handle_autodetect (
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callback cbFunc, const error_code& ec, size_t bytesTransferred)
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{
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using namespace ripple;
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if (ec)
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{
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JLOG (j_.warning) <<
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"Handle autodetect error: " << ec;
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cbFunc (ec);
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}
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else if ((mBuffer[0] < 127) && (mBuffer[0] > 31) &&
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((bytesTransferred < 2)
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|| ((mBuffer[1] < 127) && (mBuffer[1] > 31))) &&
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((bytesTransferred < 3)
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|| ((mBuffer[2] < 127) && (mBuffer[2] > 31))) &&
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((bytesTransferred < 4)
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|| ((mBuffer[3] < 127) && (mBuffer[3] > 31))))
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{
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// not ssl
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JLOG (j_.trace) << "non-SSL";
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mSecure = false;
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cbFunc (ec);
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}
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else
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{
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// ssl
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JLOG (j_.trace) << "SSL";
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mSecure = true;
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mSocket->async_handshake (ssl_socket::server, cbFunc);
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}
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}
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private:
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socket_ptr mSocket;
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bool mSecure;
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std::vector<char> mBuffer;
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beast::Journal j_;
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};
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#endif
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